Senior Machine Learning Engineer, Messaging Platform

This role is based in London or Stockholm, with flexibility to work from home.

What you'll do:

• Design, build, and ship machine learning models that optimize messaging across push, email, and in-app channels
• Plan and run A/B experiments in a multi-objective environment
• Contribute to reinforcement learning systems for long-term user outcomes
• Collaborate with product managers, data scientists, and engineers
• Own the full ML lifecycle from data to deployment

Who you are:

• Experience building and deploying machine learning models in production
• Comfortable translating business problems into ML solutions
• Hands-on experience with PyTorch and distributed systems
• Understanding of experimentation and analysis techniques